Super 120 vs Super 150 Wool: What the Numbers Mean and Which Fabric Is Right for You

The numbers on wool fabric labels refer to the fineness of the wool fibre. The higher the number, the finer the fibre. Finer fibres produce a smoother, lighter fabric with a more refined drape. They also require more care and tend to be less durable under heavy daily use than coarser wools.

Understanding the difference helps you choose the right fabric for how you actually wear the suit, not just for how it feels in the appointment.

What the Super Rating Means

The Super rating system refers to the count of the wool fibres measured in kilometres per kilogram. Super 120 wool uses fibres that, if stretched end to end, would run 120 kilometres per kilogram of fibre. Super 150 would run 150 kilometres. The Super 100s system is the international standard for measuring wool fibre fineness, and the Wikipedia entry provides the technical background for anyone who wants the full picture.

In practical terms: Super 120 fibres are finer than standard wool but coarser than Super 150. Super 150 is exceptionally fine, with a cashmere-like softness and drape.

Both are significantly finer than the wool blends and lower-grade wools used in department store suits. Both produce garments that look, feel, and drape measurably better than entry-level fabrics.

Super 120 Wool: The Professional's Workhorse

Super 120 is the right choice for most professional men who wear suits regularly.

It is fine enough to drape well and look refined. It holds its shape through a full workday. It can be worn two to three times per week with proper rotation and care without showing wear prematurely. It is appropriate across all professional contexts, from business casual environments to formal client-facing settings.

At Cardero, Super 120 wool suits start at $1,299. For a man who wears suits weekly and wants a garment that performs reliably over years, Super 120 delivers the right combination of quality and durability.

Super 150 Wool: The Event and Statement Fabric

Super 150 is softer and more luxurious to the touch than Super 120. The drape is more fluid. In the right lighting, the fabric has a subtle sheen that communicates quality to anyone who knows what they are looking at.

The tradeoff is durability. Finer fibres are more susceptible to abrasion, pilling, and wear under daily use. A Super 150 suit worn three times per week will show wear faster than a Super 120 in the same rotation.

Super 150 is the right choice for men who are building a wardrobe and want one suit at a higher register, worn for specific occasions: important presentations, formal events, black-tie environments, or any setting where the quality of the fabric communicates something specific. It is not the right choice for a daily driver suit.

At Cardero, Super 150 wool suits start at $1,699.

The Practical Decision Matrix

If you are buying your first custom suit and will wear it regularly: Super 120.

If you already have a working suit wardrobe and want to add a garment at a higher register: Super 150.

If you need a suit for a specific important event and will wear it regularly afterward: Super 120 is the more practical investment.

If you are building the Professional or Full Capsule wardrobe at Cardero, the mix is typically Super 120 and Super 150 at different tiers of the wardrobe. The daily-wear suits in Super 120. The event suits and statement pieces in Super 150.

What About the Wool Blend?

The wool blend at Cardero starts at $899. It is the entry point and serves the occasional wearer or the man building his first suit.

The difference between wool blend and Super 120 is meaningful in drape, breathability, and how the garment holds its shape over time. For a man who wears suits regularly, Super 120 is worth the $400 difference. For a man who wears a suit fewer than 10 times per year, the wool blend is a sensible choice. The full wool blend vs pure wool comparison covers the tradeoffs in detail, including the specific considerations for BC's climate.

Fabric Conversation at the Appointment

The fabric decision is made during the design session at your Cardero appointment. You handle the samples, discuss the use case, and make the choice with guidance from someone who knows how these fabrics perform over time and who has no financial incentive toward any particular option. For a broader look at fabric quality and construction, what makes a quality suit explains what to look for beyond the fibre count.

Book a free appointment at carderoclothing.com/reserve.